2x+3 + 3x-4 + 2x+3 + 3x-4 = 78
10x -2 = 78
10x = 80
x=8
deck is 2(8)+3 by 3(8)-4, or 19 by 20
Sub the number in
19 + 4(4)
= 19 + 16
= 35
multiplication is first because of bedmas
It would be 3.909769126x10^10 hope this helps and all you have to is convert to standard form if you want me to do that ill do it its no problem
Answer:
is this a multiple choice question?
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